Teac W54E playing up with Nero5!

[revolution74]

I have owned a Teac W54E for about nine months without little problem! It has always performed well and quite happily burned anything I have chucked at it! Until today that is

I have the following programs: Nero5, CDR-Win, CloneCD!

Nero wont accept any un-branded media, always used to tho so i dont know why now, all i get is "Power calibration failed"!
If im lucky i can take the disk and use it with clone or cdrwin, which the writer burns away no problems!

All this has started since i have upgraded my machine to an amd-socket A system! i only have a 250watt power supply so could that be the problem????

Thanx for any help